Page 2 - FEATURES; Hyper Digital Anti-Shock System (Hyper DAS
2 FEATURES Your Optimus CD-3720 Portable Compact Disc Player uses the latestdigital audio technology to give you the clear sound of compact discs.You can connect the CD player to your home audio or autosound systemor connect a pair of stereo headphones for portable, private listening. The CD player’...
Page 5 - FCC INFORMATION; FCC Rules
5 FCC INFORMATION This equipment complies with the limits for a Class B digital device asspecified in Part 15 of FCC Rules . These limits provide reasonable pro- tection against radio and TV interference in a residential area. However,your equipment might cause TV or radio interference even when it ...
Page 6 - CONTENTS
6 CONTENTS Powering the CD Player ...................................................................... 8 Using Batteries ................................................................................ 8 Installing Batteries ..................................................................... 9Re...
Page 8 - POWERING THE CD PLAYER; USING BATTERIES
8 POWERING THE CD PLAYER You can power your CD player from any of these sources: • two AA alkaline batteries • two special rechargeable AA nickel-cadmium batteries • two standard rechargeable AA nickel-cadmium batteries • vehicle battery power using an optional DC adapter • standard AC power using a...
Page 9 - Installing Batteries
9 You cannot charge standard nickel-cadmium rechargeable batteriesinside the CD player’s battery compartment, but you can charge themusing an external battery charger such as Cat. No. 23-133 (not sup-plied). Note: All types of nickel-cadmium batteries come fully discharged. Besure to fully charge th...
Page 10 - Recharging Nickel-Cadmium Batteries
10 2. Place two AA batteries in the compartment and on top of the attached ribbon, as indicated by the polarity symbols (+ and –) marked inside. 3. Close the cover. When flashes, the sound distorts, or the volume weakens, replace or recharge the batteries. Cautions: • Dispose of old batteries prompt...
Page 12 - • Important: This CD player is capable of using rechargeable nickel-; Using AC Power
12 • Fully discharge the batteries occasionally by playing the CD player until it no longer plays. Then fully recharge the batteries. This helpsmaintain the batteries’ full charging capacity. • Important: This CD player is capable of using rechargeable nickel- cadmium batteries. At the end of the ba...
Page 14 - Using Vehicle Battery Power
14 Using Vehicle Battery Power You can power your CD player from your vehicle’s cigarette-lighter socketusing an optional 4.5 volt DC adapter, such as Cat. No. 273-1801. Cautions: • You must use a DC adapter that supplies 4.5 volts and delivers at least 550 mA of automotive power. Its center tip mus...
Page 16 - CONNECTIONS; CONNECTING AN EARPHONE/HEADPHONES
16 CONNECTIONS You can listen to your CD player by connecting optional stereo head-phones or amplified speakers to the CD player’s PHONES jack, or by con- necting a home audio or autosound system to the CD player’s LINE OUT jack. Note: If the jacks on your equipment do not match the plugs on the sup...
Page 17 - Listening Safely; Traffic Safety
17 Listening Safely To protect your hearing, follow these guidelines when you use earphonesor headphones. • Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level. • Do not listen at extremely high volume levels. Extended ...
Page 18 - CONNECTING AMPLIFIED SPEAKERS; CONNECTING TO A HOME AUDIO SYSTEM
18 CONNECTING AMPLIFIED SPEAKERS You can listen to your CD player through optional amplified speakers(such as Cat. No. 40-1387). Plug the speaker cable’s 1 / 8 -inch (3.5-mm) plug into the CD player’s PHONES jack. CONNECTING TO A HOME AUDIO SYSTEM You can listen to your CD player through your home a...
Page 19 - CONNECTING TO AN AUTOSOUND SYSTEM
19 CONNECTING TO AN AUTOSOUND SYSTEM You can listen to your CD player through your autosound system in oneof the following ways: • If your autosound system has LINE IN jacks, connect the supplied Y- cable’s 1 / 8 -inch (3.5-mm) plug to the CD player’s LINE OUT jack. Then connect the Y-cable’s phono ...
Page 21 - OPERATION; LOADING A CD
21 OPERATION LOADING A CD Caution: To help prevent dust from entering the CD player, always keepthe CD compartment cover closed except to load or unload CDs. 1. Slide HOLD in the direction of the arrow marked next to HOLD . 2. Press PUSH OPEN and lift the CD compartment cover. 3. Carefully place a C...
Page 22 - PLAYING A CD
22 PLAYING A CD Warning: To protect your hearing if you are using earphones or head-phones, set VOLUME to its lowest setting before you play a CD. Press PLAY/PAUSE . The CD player automatically turns on and 00 , the total number of tracks on the CD, and the CD’s playing time briefly ap-pear on the d...
Page 23 - TURNING E-BASS ON AND OFF
23 To temporarily stop play, press PLAY/PAUSE . The current track’s elapsed time flashes. To resume play, press PLAY/PAUSE again. When the last track finishes playing, the CD stops and 00 appears for a few seconds. Then the CD player automatically turns off. To turn it offsooner, press STOP . TURNIN...
Page 24 - DIGITAL ANTI-SHOCK SYSTEM
24 DIGITAL ANTI-SHOCK SYSTEM Your CD player contains special circuits to overcome sound skippingproblems caused by shock or vibration. This means you can carry the CDplayer anywhere you go or use it in your vehicle. When you turn on theanti-shock system, the CD player continuously saves 10 seconds o...
Page 25 - LOCKING THE CONTROLS
25 Note: The CD player consumes extra battery power when you use theanti-shock system. When you use the CD player in a stable location, re-peatedly press DAS until the icon disappears to conserve battery power. LOCKING THE CONTROLS To protect your CD player from accidental program changes, slide HOL...
Page 26 - AUDIBLE SEARCH; Note: If you hold down; INTRO SCAN
26 During play, press to return to the beginning of the current track. Press twice to return to the beginning of the previous track, then re- peatedly press to move through the previous tracks or to move through the next tracks. To move to the beginning of the next track, press . AUDIBLE SEARCH To s...
Page 27 - Intr; REPEAT PLAY; REPEAT
27 To begin scanning, press PLAY MODE . Intr appears. Then press PLAY/ PAUSE . The first track number and --:00 appear and intro scan starts from the first track on the CD. To return to normal play, press PLAY/PAUSE . The current track’s elapsed time appears. Notes: • Intro scan plays the tracks in ...
Page 28 - RANDOM PLAY; RND
28 To repeat all tracks on a CD, repeatedly press REPEAT/ENTER until RE- PEAT appears. The CD player continuously replays the CD. To cancel repeat play, press REPEAT/ENTER until REPEAT disappears. RANDOM PLAY In random play, the CD player plays all the tracks once in random order,then automatically ...
Page 29 - PROGRAMMED PLAY; PGM
29 PROGRAMMED PLAY You can program up to 22 tracks on a CD to play in any order youchoose, and you can program the same track to play more than once. Follow these steps to program and play a sequence. 1. Press PLAY/PAUSE to turn on the CD player. 2. Press PLAY MODE twice. PGM flashes. 3. Repeatedly ...
Page 30 - TROUBLESHOOTING; Problem
30 TROUBLESHOOTING If your CD player is not working properly, follow these suggestions to seeif you can eliminate the problem. If these suggestions do not work, con-tact your local RadioShack store for assistance. Problem Possible Cause Suggestion The CD player does not work. HOLD is set in the dire...
Page 32 - CARE AND MAINTENANCE
32 CARE AND MAINTENANCE Your Optimus CD-3720 Portable Compact Disc Player is an example ofsuperior design and craftsmanship. The following suggestions will helpyou care for your CD player so you can enjoy it for years. Keep the CD player dry. If it gets wet, wipe it dry immediate-ly. Liquids might c...
Page 33 - CD CARE TIPS
33 Wipe the CD player with a damp cloth occasionally to keepit looking new. Do not use harsh chemicals, cleaning sol-vents, or strong detergents to clean the CD player. Always keep the charging terminals on the rechargeablebatteries clean. Use a cotton swab dipped in alcohol toclean the terminals. M...
Page 35 - SPECIFICATIONS; General
35 SPECIFICATIONS Frequency Response ( ± 3 dB) ............................................ 20–20,000 Hz Line Output ...................................................................................... 0.6 V Sampling Frequency .................................................................. 44.1...
